Remove Constant Variables

Constant variables are variables with the same value in all samples. This function is equivalent to remove_low_var(x, var_cutoff = 0, by = by, strict = strict).

Usage

remove_constant(x, by = NULL, strict = FALSE)

Arguments

x

A glyexp::GlycomicSE(), glyexp::GlycoproteomicSE(), or SummarizedExperiment::SummarizedExperiment() object.

by

Either a column name in sample_info (string) or a vector specifying group assignments for each sample.

strict

If FALSE, remove a variable only if it is constant in all groups. If TRUE, remove a variable if it is constant in any group. Defaults to FALSE.

Value

A container of the same class as x, with filtered variables.

See also

remove_low_var()